64387673 has 16 divisors (see below), whose sum is σ = 74954880. Its totient is φ = 54172800.

The previous prime is 64387663. The next prime is 64387709. The reversal of 64387673 is 37678346.

It is a cyclic number.

It is not a de Polignac number, because 64387673 - 2⁴ = 64387657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64387663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112478 + ... + 113048.

It is an arithmetic number, because the mean of its divisors is an integer number (4684680).

Almost surely, 2^64387673 is an apocalyptic number.

It is an amenable number.

64387673 is a deficient number, since it is larger than the sum of its proper divisors (10567207).

64387673 is a wasteful number, since it uses less digits than its factorization.

64387673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 508032, while the sum is 44.

The square root of 64387673 is about 8024.1929812287. The cubic root of 64387673 is about 400.8060267944.

The spelling of 64387673 in words is "sixty-four million, three hundred eighty-seven thousand, six hundred seventy-three".